DRILLING
SYSTEMS
INTRODUCTION
Berminghammer has been revolutionizing the
foundation industry with its bold and innovative approach to every project. Berminghammer supplies
high quality, project specific equipment, serviced
by a world-class team of designers, engineers and
field personnel. Berminghammer drilling systems
demonstrate the company’s strength in harnessing
over 120-years of construction experience with innovation and practicality in equipment design and
manufacturing.
Berminghammer drills represent the most ruggedly
designed and extensively field-tested all-purpose
drills in the foundation industry. Berminghammer
drills can be used in almost every type of drilling application and specialize in Down-the-HoleHammer applications. There is simply no better
choice for foundation contractors than a
Berminghammer drill.
PROJECT PLANNING AND VISUALIZATION
The synergy of foundation construction and equipment expertise together with talented design engineers
places Bermingham in a unique position to assist
other foundation contractors in planning and visualizing foundation construction projects. In recent years
Bermingham has provided contractors with detailed
computer models of their projects at the planning and
bidding stages as well as throughout production. This
allows Bermingham to recommend equipment and
procedures, and provide site supervision – a service
not offered by other equipment manufacturers.
PRODUCTION DRILLING
Productive drilling occurs when the majority
of the time spent on-site is devoted to actually
drilling. Many competitor drill rigs involve time
draining activities such as: long rig-up times,
difficult and time consuming pile placement,
adding more and splicing piles. Bermingham
drilling systems are intelligently designed to
minimize these deficiencies and maximize production rates through hard rock. Bermingham’s
leads are most often designed to allow for one
stroke, meaning that there is no slow installation of additional drill string and no pile splicing
necessary. Berminghammer drilling systems are
the most maneuverable on the market thanks to
the patented combination with the Vertical Travel Lead. This maneuverability greatly decreases
setup time so that the majority of time is spent
drilling. The Berminghammer lead systems in
conjunction with our hydraulic drills, drill string,
impact hammer and custom rotary bits allow for
execution of drilling, driving and rock socketing
efficiently and seamlessly.
REVERSE CIRCULATION DRILLING
‘Reverse Circulation’ drilling involves the supply of
air down through the drill-string to decrease the
‘effective density’ of the water in the center of the
drill-string. Operating much like an ‘air-lift’, the
drilling spoils are carried out of the hole through this
rising column lower-density air/water mixture (see
Figure below). Reverse Circulation requires that the
outer annular area of the casing be kept full of water
in order to provide the hydraulic head required to effectively ‘push’ the central column of air/water/spoils
up and out of the hole through the central pipe of
the drill-string. Reverse Circulation is an effective
drilling technique for a wide range of hole diameters
including very large holes – up to 3-m diameter and
WATER/AIR
AND SPOILS
OUT
(DRILL DISCHARGE)
WATER OR AIR IN
(DRILL SWIVEL)
larger. It is also effective for very deep holes, and
holes drilled into hard-rock. Another advantage of
Reverse Circulation is the ability to control/direct
the drilling spoils by simply directing the discharge
pipe to the desired site location or even to a dedicated barge (for environmentally sensitive, overwater
applications). This cannot be accomplished with
direct circulation which allows water and cuttings to
spill out of the top of the pile. Reverse Circulation
can be used in conjunction with rotary drilling bits
as well as Down-the-Hole-Hammer applications.
The Berminghammer Reverse Circulation Drills are
particularly well suited to Down-the-Hole-Hammer
applications due to their simple, rugged design and
construction.
WATER/AIR
AND SPOILS
OUT
WATER OR AIR IN
(DRILL SWIVEL)
WATER
AIR IN
AIR IN
DRILL
STRING
DRILL
STRING
UMBRELLA
SEAL
CROSSOVER
SUB
SHROUD
SPOILS
SPOILS
DOWN
THE HOLE
HAMMER
AIR
LIFT
DRILL
BIT
WATER
BERMINGHAM REVERSE CIRCULATION DRILL PERFORMANCE SPECIFICATIONS
BHD-40
BERMINGHAM DRILL STRING
BHD-80
VERSATILITY IN LEAD STYLE
Lead-Mounted Drill Rigs on Crawler Crane
For use on land or over-water, combining a Berminghammer Drill with a
Berminghammer Vertical Travel Lead
(VTL) offers the most versatility. Movement from hole-to-hole will occur more
quickly with this leader system than
with any other drilling system and can
operate on vertical or battered piles.
The versatility of the lead system can
allow for multiple insertions from one
crane/barge location. On one project,
a Berminghammer VTL System and a
BHD-40 drill out-performed a dedicated ‘drilling-rig’ by 5 to 1. Bermingham
personnel specialize in the rig-up and
rig-down of our VTL Systems and we
have the ability to connect our systems
to virtually any make of crane. A VTL
System has the advantage of being able
to ‘activate’ the weight of the lead and
attachments as additional ‘crowd’ for
the drilling.
Flying Lead
In some overwater applications a flying
lead and drill might be the best choice.
If the supporting crane does not have
adequate capacity to support a VTL
System, or if the required drilling equipment is very heavy then an underhung
system may be the most economical.
Berminghammer leads rigged as underhung leads come equipped with hydraulic clamp that can ‘grab’ the casing to maintain the underhung lead in
a suitable position for drilling. Applying ‘crowd’ in this type of lead system
requires a hydraulic-crowd attachment
to be positioned above (or below) the
drill, and uses a pin-connection to the
leader to apply crowd. Bermingham
have performed many projects where
our hydraulic-crowd system has been
used effectively.
EXTREME DIAMETER AND DEPTH CFA DRILLING
Bermingham’s long history of innovation has led to many drilling depth records being broken. The L-27HT
Lead System shown on the left was designed for 24 inch diameter CFA drill depths of approximately 130
feet. Bermingham’s next innovation, the H-36 Lead shown on the right, was designed to drill 48 inch diameter CFA piles up 167 feet deep. Bermingham is often approached by contractors that would like to drill
deeper or larger diameters than what their current rigs can accomplish. Berminghammer is up to the task
of finding a way to make the impossible, possible.
ACCESSORIES AND INNOVATIONS
Power Pack Brackets
Allows a power pack to be mounted to the
rear of the crane
Crane Hydraulic Retrofit
Utilizes existing crane hydraulics to run Bermingham Drills & more
Stand Alone Valves (SAV)
Allows a customer to utilize an existing Vibro
powerpack to run Bermingham drills & more
Custom Gibs / Guides for Any Rotary
Put any Rotary on Bermingham Leads
360 Degree Crossover
Collects cuttings from all angles, evacuating
these cuttings much faster than a traditional
crossover
Custom RC Swivels for European Drill Rigs
Adapts European drill rigs to be able to drill
RC
Custom Casing Gates for European Drill Rigs
Helps assure proper placement ands aids in
maintaining verticality
High Capacity Torque Resistant Swivels
Allows for higher torque: Models to resist
250,000 ft-lbs / 350,000ft-lbs)
HOW TO CONTACT US
Phone: 905-528-7924
Toll Free (US & Canada): 1-800-668-9432
Email: [email protected]
Website: www.berminghammer.com